Algorithms Overview

Algorithms implemented in the SDK can be grouped into categories based on their function.

Processors

Processors are algorithms that can be used to process data either to change some of their characteristics (e.g. flip the x coordinate of every event) or perform some advanced analysis (e.g. tracking objects or extracting spatio/temporal patterns).

• Algorithms taking events as input and outputting the same number of events but with a transformation applied:

  Algorithm Name	Module
  Metavision::FlipXAlgorithm	Core
  Metavision::FlipYAlgorithm	Core
  Metavision::PolarityInverterAlgorithm	Core
  Metavision::RotateEventsAlgorithm	CV
  Metavision::TransposeEventsAlgorithm	CV

• Algorithms processing events as input and outputting some data from the event (counting, tracking etc.):

  Algorithm Name	Module
  Metavision::EventConverterAlgorithm	CV
  Metavision::FrequencyAlgorithm	CV
  Metavision::PeriodAlgorithm	CV
  Metavision::SparseOpticalFlowAlgorithm	CV
  Metavision::PlaneFittingFlowAlgorithm	CV
  Metavision::TripletMatchingFlowAlgorithm	CV
  Metavision::CountingAlgorithm	Analytics
  Metavision::DominantValueEventsAlgorithm	Analytics
  Metavision::JetMonitoringAlgorithm	Analytics
  Metavision::PsmAlgorithm	Analytics
  Metavision::SpatterTrackerAlgorithm	Analytics
  Metavision::TrackingAlgorithm	Analytics
  Metavision::BlinkingDotsGridDetectorAlgorithm	Calibration
  Metavision::DftHighFreqScorerAlgorithm	Calibration

• Algorithms processing events as input and outputting display-related data (e.g. frames):

  Algorithm Name	Module
  Metavision::OnDemandFrameGenerationAlgorithm	Core
  Metavision::PeriodicFrameGenerationAlgorithm	Core
  Metavision::TimeDecayFrameGenerationAlgorithm	Core
  Metavision::DenseFlowFrameGeneratorAlgorithm	CV
  Metavision::SparseFlowFrameGeneratorAlgorithm	CV
  Metavision::DominantValueMapAlgorithm	Analytics
  Metavision::FrequencyMapAsyncAlgorithm	Analytics
  Metavision::HeatMapFrameGeneratorAlgorithm	Analytics
  Metavision::MapGeneratorAsyncAlgorithm	Analytics
  Metavision::PeriodMapAsyncAlgorithm	Analytics
  Metavision::BlinkingFrameGeneratorAlgorithm	Calibration

Filters

Filters are algorithms taking events as input and outputting only the events that satisfy certain conditions.

Algorithm Name	Module
Metavision::PolarityFilterAlgorithm	Core
Metavision::RoiFilterAlgorithm	Core
Metavision::AntiFlickerAlgorithm	CV
Metavision::ActivityNoiseFilterAlgorithm	CV
Metavision::RoiMaskAlgorithm	CV
Metavision::SpatioTemporalContrastAlgorithm	CV
Metavision::TrailFilterAlgorithm	CV